Synergy between Ni and Fe in NiFe aerogel oxygen evolution reaction catalyst: <i>in situ</i> <sup>57</sup> Fe Mössbauer and X-ray absorption spectroscopy studies
Haoran Yu, Matthew E. Sweers, Luigi Osmieri, Jae Hyung Park, A. Jeremy Kropf, Dali Yang, Lu Ma, Xiang Lyu, Alexey Serov, David A. Cullen, Piotr Zelenay, Deborah J. Myers, Raphaël P. Hermann
Abstract
In situ spectroscopies reveal the increase of Fe and Ni valence states during oxygen evolution in anion-exchange-membrane water electrolyzers (AEMWE) for hydrogen production.
Topics & Concepts
AerogelMössbauer spectroscopyCatalysisIn situMaterials scienceX-ray absorption spectroscopyOxygenAbsorption spectroscopyAbsorption (acoustics)SpectroscopyAnalytical Chemistry (journal)ChemistryNanotechnologyCrystallographyOpticsEnvironmental chemistryOrganic chemistryComposite materialPhysicsQuantum mechanicsCatalytic Processes in Materials ScienceElectrocatalysts for Energy ConversionCatalysis and Oxidation Reactions